The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1977
Filed:
Oct. 26, 1973
Applicant:
Inventors:
Robert J Hagenbach, Rochester, NY (US);
Robert D Fenity, deceased, late of Webster, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
96 / ; 252 / ;
Abstract
Electrostatographic developer comprised of a toner and an uncoated carrier wherein the carrier is a Group IV metal oxide or a double oxide of tin, hafnium, germanium, zirconium, or titanium and an alkaline earth or lead. These carriers have the desirable properties generally associated with the coated carriers heretofore employed in the art, but are not as prone as the coated carriers to degradation and impactation and therefore have a longer useful life.